Tire-changing device



W, L. BUCKSEN.

TIRE CHANGING DEVICE.

APPLICATION FILED JANl mi.

1,@8,928 Patented Mar. 7, 19212,

W394i ji' 'l w. L. BUUKSEN.

TIRE CHANGING DEVICE.

APPLICATloN min 1AN.4,`1921.

1,408,928, Patented Mau'. 7, 1921?..

2 SHLETSl-SHEET 2.

WITNESSES :E WLlmdf 'WM/TUR c@ @JAM i :i f vi ill ieieeeee.

ippication filerl Jennery Ll, 195821.. Seriali No. 312,556?.

, tires, :ind especially iiclepted for iise Wiili lie split rinis'ef theqiiicldemennteble type ei tire, wherein ineens is provided for firstelifsettingilie ends of the split rim7 eind for iierivards .moving seidends lengiiiidiniiliy with respect to eiieh other to eoliiipse the riin.

ln the drawings: f

Figure l is ii plain View oi' ii riin showing the improved device inuse,

Figure 2 is zi section of iiy paire oi' the rim showing,r one of thegrii'iping inns Figure 3 is :i section on the line of lfigiire l,

Figure si is pingjews,

Figure 5 is ii plain View ei the sinne,

.Figure (l is zi pliin View nii' he "ilioli,

Figui-e T is ii siiniliii' View oi' lie liodjyT plete 'Vlie presenteniliodinieii of lie invention is shown iii eonneetimi ii'iili :i spliiriiii i, whose ends :ire zidzipied to :iliiii iis shown when the riiiiis pliieed iipon the wheel`r and the ends :ire preveiiied i'i'oinlateral inoi'enient with respect to eiieli other by ineens of :i plate'2 which is secured :ii one end to one oi" the ends of the rims end lzipsover the other end. i

The improved iool comprises three pairs of' gripping' jews, which :ireespeeiiilly shown in Figures 2. und lend liliii'li oi' these :i sideView oi ene of the grin lpiws comprises ii pliite i ciiii'ed longitiidi!iizilly iis shown in Figui-e 2, :ind having' :it one end :i piiir oi'iilined liiieriilly spaced hearings Ji. At the other end and on theeeni-iive 'fece eiieli jaw hais ii transverse groove 5, the siiidgrooves having` side wells wiiieh meet nl; iipproxiniiitely ii righiangle, :is shown.

l'iieli pluie also provided with :in openiiigr intermediateI its ends,and the seid openings :ire elongated iis slioivn in -iie direrlnioii 0i'lie longl dimension of the pifiie.

ileeli pair ef jews hinged ro shaped plaie or body l er fix eiirii oiiii plaies haring' e Ceiirzii opening d in? i purpose to be presenlgYdescribed, :ind side bearings l0. lie bearings 10 et centers ef thesides of the bedr oilz the phii'e, end the seid bearings iii-eiiiiiiiiiied te iii lieiineeii :i pair of bearings E for ree hinge piner pinle il. irliieli hinge( nee-is the jews wili the body plaie Thepluie ila liiis one ef iis ends ini-nir l i piiii of ziiineil bearingslll1 liiin wise ilie siinie iis the plates nl rod is eonneeied n'i'izlieiieli bedr nleie in' zit one end oi.' the rod., 'the end oi lie rodbeing;- reduced to lit ilie opening 9, es snmifn in Figure 2j iindrliese rods iiie lesiifniiied :iiI l2, 13, end le. The rods i2 and 13iire i iii@ but the rod lei is provided wiih iin :in r lient porion nearthe end connerie@ gripping jews, so lliiii the liodli" mi lies iii; iinobtuse angle 'with :iesiieri: lezri; diniensien of die gripping pints.

ilie end of esieli rod .i2N l' und i-i remore from ehe gripping jaws isthi-ended :is shown. iind ilie threaded ends of the rods i' :ind liliii'e engaged by ii4 double nur lf3, ilie iii-range ineiii heilig siiclithee ii'lieii iiie'iiii is iin-ned in one direfiien7 ehe rods will hei'iiined inwind eiieli 'einen while when iiiei/ iire iiirned in dieopposite direetien, "die reds will turn iiiviiy from eeeli other. i

To time pair of jews which is eniiieeied with the rod 13 there iseonneeed :i seeend red 16 similar in die reds l2 :iiiillfy lint 0i? lesslengili. This red shown in igiires l and 3, has ii bearing" ing l?iifliieli is reeeiifed between the bearings 10a of ine plete 8, :indilie reds 14S.- :infl 16 lieve their threaded ende connected ley a.fieiileie nii?j i8 similar in igiie nn l5 e seein er saddle. The etherend en raged by ii Wing iiiii 20 ind lay ineens ef il'ie g ii pms nieyTee ele-mined en die ren,

iz'iie rini l, iis eleerijf anA AThe nut engagesthe seat 7a ofthe otherjaw,

the seats 7 ,and 7? being shaped properly to -receive'the'head and thenu In operation, the device 1s arranged as .shown lin Figure 1, one ofthe clamps, namely .with which the rods and 16' `are conaffected', beingengaged with the rim near the split, and near that end of the splitwhich has' the plate'2. That clamp connected with the rod 12 is arrangedat a point diametrically opposite the first named clamp, and the clampconnected with the rod 14 is arranged at an interval of 90o from thefirst-named clamps.

Whenso arranged, the nut 15 is turned until the ends of the rim areoffset with respect to each other. Now the nut 18 is turned to draw therods 14 and 16 toward each other, and it will be obvious that the endsof the split rim will be moved aldngside each/'other to .collapse therim. To extend their'tire, the nut 18 is first turned to move the rods14( and 16 away from each ether, after which the nut 15 is turned to-move the rods 12 and 13 away from each other. i

1. device of the character specified comprising a series .of threeclamps adapted to eifigage a split rim, two of 'said clamps con nectedto the rim at diametrically opposite peints and connected to each otherby a turnbuckle structure for moving the same toward and away from eachother, the third clamp cennected to the rim at a point substantially'midway between .the points of connection of the irst named pair ofclamps, and a turn buckle structure connecting the third clampv and thatclamp connected to the rimadjacent the split thereof, said last namedturn buckle structure pivotally connected at its ends toy 1,4.-oe, eae Athe respective clamps and disposed in a substantially diagonal line.

2.- A device of the character specified comprising a series of threeclamps adapted to engage a split rim, two oi said clamps connected tothe rim at dia-metrically opposite points, a turnbuckle connectionbetween these two clamps for moving the same toward and away from eachother, a turnbuckle connection between that one of the aforementionedclamps which is adjacent the split of the rim, and the third clamp, eachof said clamps comprising a body portion adapted tei connection with theturnbuckle members an 'a pair of jaws hinged at one end to said bodvportion, said jaws being curved longiutu inally and having transversegrooves in their opposing concave faces at their other ends to receivevthe edge lof the rim, and

means forvforcing together the jaws of the several clamps. Y

. 3. A device of the character specified comi prising a series' of threeclamps adapted to engage a split rim, two of said clamps gripping therim at diametrically opposite points,

extensible means connecting said clamps, the third clamp gripping therimintermediate lthe gripping positions 'of the first named pair of clamps,and-an extensible connecting member between the third clamp and one ofthe rst named pair of clamps, said connecting member having pivotalconnection with the respective clamps.'

4. A device of the character specified, comprising a series of threeclamps adapted to engage a split rim, a turn buckle connection betweentwo of the clamps for moving said cl Inps toward and from each other,and a turn uc le connectionbetween one of the said clam and theyremainin clamp.

`= ALTER IEWTS/ UCKSEN.

